Solved papers for AMU Medical AMU Solved Paper-2012

done AMU Solved Paper-2012 Total Questions - 200

• question_answer1) The total torque about pivot A provided by the forces shown in the figure, for L = 3.0 m, is
  A)
  210 N-m              
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  B)
  140 N-m
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  C)
  95 N-m                                
  done clear
  D)
  75 N-m
  done clear
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• question_answer2) A wheel turning with angular speed of 30 rev/s is brought to rest with a constant acceleration. It turns 60 rev before it stops, the time that elapses before it stop, is
  A)
   2s                                          
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  B)
   4s
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  C)
   5s                                          
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  D)
   6s
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• question_answer3) A rod of length L is composed of a uniform length 1/2 L of wood whose mass is m^ and a uniform length 1/2 L of brass whose mass is \[{{m}_{b}}\]. The moment of inertia I of the rod about an axis perpendicular to the rod and through its centre is equal to
  A)
   \[({{m}_{w}}+{{m}_{b}}){{L}^{2}}/12\] 
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  B)
   \[({{m}_{w}}+{{m}_{b}}){{L}^{2}}/6\]
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  C)
   \[({{m}_{w}}+{{m}_{b}}){{L}^{2}}/3\]    
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  D)
   \[({{m}_{w}}+{{m}_{b}}){{L}^{2}}/2\]
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• question_answer4) Consider a satellite orbiting the earth as shown in the figure below. Let \[{{L}_{a}}\] and \[{{L}_{p}}\] represent the angular momentum of the satellite about the earth when at aphelion and perihelion respectively. Consider the following relations.                

  (i) \[{{L}_{a}}={{L}_{p}}\]

  (ii) \[{{L}_{a}}=-{{L}_{p}}\]

  (iii) \[{{r}_{a}}\times {{L}_{a}}={{r}_{p}}\times {{L}_{p}}\]

  Which of the above relation (s) is/are true?
  A)
   (i) only                
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  B)
   (ii) only
  done clear
  C)
   (iii) only              
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  D)
   (i) and (iii)
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• question_answer5) A body is projected vertically upward from the surface of the earth with a velocity equal to half the escape velocity. If R is radius of the earth, the maximum height attained by the body is
  A)
   R/6                                       
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  B)
   R/3  
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  C)
   2R/3                                     
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  D)
   R
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• question_answer6) The imaginary angular velocity of the earth for which the effective acceleration due to gravity at the equator shall be zero is equal to
  A)
                   \[1.25\times {{10}^{-3}}\] rad/s               
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  B)
                   \[2.50\times {{10}^{-3}}\] rad/s
  done clear
  C)
                   \[3.75\times {{10}^{-3}}\] rad/s               
  done clear
  D)
                   \[5.0\times {{10}^{-3}}\] rad/s
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• question_answer7) If an anisotropic solid has coefficients of linear expansion \[{{\alpha }_{x}},\,\,{{\alpha }_{y}}\] and \[{{\alpha }_{z}}\] for three mutually perpendicular directions in the solid, its coefficient of volume expansion will be
  A)
   \[{{({{\alpha }_{x}}\,{{\alpha }_{y}}\,{{\alpha }_{z}})}^{1/3}}\]   
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  B)
   \[{{\alpha }_{x}}+{{\alpha }_{y}}+{{\alpha }_{z}}\]
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  C)
   \[{{(\alpha _{x}^{2}+\alpha _{y}^{2}+\alpha _{z}^{2})}^{1/2}}\]               
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  D)
   \[{{(\sqrt{{{\alpha }_{x}}}+\sqrt{{{\alpha }_{y}}}+\sqrt{{{\alpha }_{z}}})}^{2}}\]
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• question_answer8) The terminal speed attained by an aluminium sphere of radius 1 mm falling through water at \[{{20}^{o}}C\] will be close to
  A)
   9.2 m/s               
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  B)
   6.9 m/s
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  C)
   4.6m/s                
  done clear
  D)
   2.3 m/s                
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• question_answer9) 100 mol of an ideal gas is heated from 10 to \[{{20}^{o}}C\] keeping its volume constant pressure constant. Let \[\Delta {{U}_{a}}\] and \[\Delta {{U}_{b}}\] denote the change in the internal energy of the gas due to process  and  respectively. Then which of the following shall be true?
  A)
   \[\Delta {{U}_{a}}=\Delta {{U}_{b}}\]                    
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  B)
   \[\Delta {{U}_{a}}>\Delta {{U}_{b}}\]
  done clear
  C)
   \[\Delta {{U}_{a}}<\Delta {{U}_{b}}\]                    
  done clear
  D)
   \[\Delta {{U}_{a}}=\Delta {{U}_{b}}=0\]
  done clear
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• question_answer10) Refer to the Carnot cycle of an ideal gas shown in the figure. Let \[{{W}_{a\to b}},{{W}_{b\to c}},{{W}_{c\to d}}\] and \[{{W}_{d\to a}}\]represent the work done by the system during the processes \[a\to b,\,b\to c,\,c\to d\] and \[d\to a\]respectively. Consider the following relations

  (i) \[{{W}_{a\to b}}+{{W}_{b\to c}}+{{W}_{c\to d}}+{{W}_{d\to a}}>0\]

  (ii) \[{{W}_{a\to b}}+{{W}_{b\to c}}+{{W}_{c\to d}}+{{W}_{d\to a}}<0\]

  (iii) \[{{W}_{a\to b}}+{{W}_{c\to d}}>0\]

  (iv) \[{{W}_{b\to c}}+{{W}_{d\to a}}=0\]

                  Which of the above relation(s) is/are true?
  A)
   (i) and (iii)          
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  B)
   (iii) and (iv)
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  C)
   (i) (iii) and (iv)                  
  done clear
  D)
   (ii),(iii) and (iv)
  done clear
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• question_answer11) An ideal gas undergoes a reversible isothermal expansion from a state i to \[f\]. The change in entropy \[\Delta S\,(i\to f)\]) is
  A)
   0
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  B)
   > 0
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  C)
   < 0
  done clear
  D)
                   not defined for the process
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• question_answer12) Water flows in a streamlined manner through a capillary tube of radius a the pressure difference being p and the rate of flow Q. If the radius is reduced to a/2 and the pressure increased to 2p. The rate of flow becomes
  A)
   4Q                        
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  B)
   Q    
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  C)
   \[\frac{Q}{4}\]                                 
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  D)
   \[\frac{Q}{8}\]
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• question_answer13) Figure given shows a sinusoidal wave on a string. If the frequency of the wave is 150 Hz and the mass per unit length of the string is 0.2 g/m, the power transmitted by the wave is                                
  A)
                   2.34 W 
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  B)
                   3.84 W
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  C)
                   4.80 W                
  done clear
  D)
                   5.78 W
  done clear
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• question_answer14) Two closed organ pipes sounded simultaneously given 5 beats per second between the fundamentals. If the shorter pipe is 1.10 m long, the length of the longer pipe is
  A)
   1.22 m                 
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  B)
   1.18 m
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  C)
   1.14 m                 
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  D)
   1.12 m
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• question_answer15) The electric field in a certain region is given by\[E=5i-3j\,\,kV/m\]. The potential difference \[{{V}_{B}}-{{V}_{A}}\] between points A and B, having coordinates (4, 0, 3) m and (10, 3, 0) m respectively, is equal to
  A)
   21kV                    
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  B)
   -21kV
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  C)
   39 kV                   
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  D)
   - 39 kV
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• question_answer16) A rod lies along the x-axis with one end at the origin and the other at \[x\to \infty \]o. it carries a uniform charge \[\lambda \,C/m\]. The electric field at the point \[x=-a\] on the axis will be
  A)
   \[E=\frac{\lambda }{4\pi {{\varepsilon }_{0}}a}(-i)\]       
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  B)
   \[E=\frac{\lambda }{4\pi {{\varepsilon }_{0}}a}(i)\]
  done clear
  C)
   \[E=\frac{\lambda }{2\pi {{\varepsilon }_{0}}a}(-i)\]       
  done clear
  D)
   \[E=\frac{\lambda }{2\pi {{\varepsilon }_{0}}a}(i)\]
  done clear
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• question_answer17) In a parallel-plate capacitor with plate area A and charge Q, the force on one plate because of the charge on the other is equal to
  A)
   \[\frac{{{Q}^{2}}}{{{\varepsilon }_{0}}{{A}^{2}}}\]                           
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  B)
   \[\frac{{{Q}^{2}}}{2{{\varepsilon }_{0}}{{A}^{2}}}\]
  done clear
  C)
   \[\frac{{{Q}^{2}}}{{{\varepsilon }_{0}}A}\]                                          
  done clear
  D)
   \[\frac{{{Q}^{2}}}{2{{\varepsilon }_{0}}A}\]
  done clear
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• question_answer18) Two capacitors, \[3\,\mu F\] and \[4\,\mu F\], are individually charged across a 6 V battery. After being disconnected from the battery, they are connected together with the negative plate of one attached to the positive plate of the other. What is the final total energy stored
  A)
   \[1.26\times {{10}^{-4}}J\]         
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  B)
   \[2.57\times {{10}^{-4}}J\]
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  C)
   \[1.26\times {{10}^{-6}}J\]         
  done clear
  D)
   \[2.57\times {{10}^{-6}}J\]
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• question_answer19) The given figure shows a spherical Gaussian surface and a charge distribution. When calculating the flux of electric field through the Gaussian surface, the electric field will be due to                
  A)
   \[+\,\,{{q}_{3}}\] alone
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  B)
   \[+\,\,{{q}_{1}}\] and \[+\,\,{{q}_{3}}\]
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  C)
   \[+\,\,{{q}_{1}},+\,\,{{q}_{3}}\] and \[-\,\,{{q}_{2}}\]
  done clear
  D)
   \[+\,\,{{q}_{1}}\] and \[-\,\,{{q}_{2}}\]
  done clear
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• question_answer20) A voltmeter of resistance \[280\,\,\Omega \] reads the voltage across the terminals of an old dry cell to be 1.40 V, while a potentiometer reads its voltage equal to 1.55 V. To draw maximum power from the battery, the load resistance must have the value
  A)
   \[60\,\,\Omega \]                          
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  B)
   \[45\,\,\Omega \]
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  C)
   \[35\,\,\Omega \]                          
  done clear
  D)
   \[30\,\,\Omega \]
  done clear
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• question_answer21) The electron of a hydrogen atom revolves round the proton in a circular n^ orbit of radius\[{{r}_{n}}={{\varepsilon }_{0}}{{n}^{2}}{{h}^{2}}/(\pi m{{e}^{2}})\] with a speed \[{{v}_{n}}=\frac{{{e}^{2}}}{2{{\varepsilon }_{0}}nh}\]. The current due to the circulating charge is proportional to
  A)
                   \[{{e}^{2}}\]                                     
  done clear
  B)
                   \[{{e}^{3}}\]
  done clear
  C)
                   \[{{e}^{5}}\]                                     
  done clear
  D)
                   \[{{e}^{6}}\]
  done clear
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• question_answer22) Six resistances each of value \[r=5\,\,\Omega \]. are connected between points A, B and C as shown in the figure. If \[{{R}_{1}},{{R}_{2}}\] and \[{{R}_{3}}\] are the net resistances between A and B, between B and C and between A and C respectively, then\[{{R}_{1}}:{{R}_{2}}:{{R}_{3}}\] will be equal to
  A)
   6 : 3 : 2                                
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  B)
   1 : 2 : 3
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  C)
   5 : 4 : 3                                
  done clear
  D)
   4 : 3 : 2
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• question_answer23) Consider the inferences given below in respect of the following current loop of wire kept in a magnetic field B                

  (i) The magnitude and direction of force on the element AC of the wire is \[\frac{\sqrt{3}}{2}\] ILB directed into the page

  (ii) The magnitude and direction of force on the element AB of the wire is \[\frac{\sqrt{3}}{2}\] ILB directed into the page

  (iii) The total force on the loop ABCA is zero

  Which of the above is/are not true?
  A)
   (i) and (ii)           
  done clear
  B)
   (ii) only     
  done clear
  C)
   (i) and (iii)          
  done clear
  D)
   (ii) and (iii)
  done clear
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• question_answer24) The magnetic field in a certain region of space is given by \[B=8.35\times {{10}^{-2}}i\,T\]. A proton is shot into the field with velocity\[v=(2\times {{10}^{5}}i+4\times {{10}^{5}}j)\,\,m/s\]. The proton follows a helical path in the field. The distance moved by proton in the x-direction during the period of one revolution in the yz- plane will be
  A)
   0.053 m              
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  B)
   0.136 m
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  C)
   0.157m               
  done clear
  D)
   0.236m
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• question_answer25) A planar coil having 12 turns carries 15 A current. The coil is oriented with respect to the uniform magnetic field B = 0.2i T such that its directed area is A = 0.04 i \[{{m}^{2}}\]. The potential energy of the coil in the given orientation is
  A)
   0                                            
  done clear
  B)
   + 0.72 J
  done clear
  C)
                   +1.44 J                
  done clear
  D)
                   -1.44J
  done clear
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• question_answer26) The adjacent figure shows the cross-section of a long rod with its length perpendicular to the plane of the paper. It carries a constant current flowing along its length. \[{{B}_{1}},{{B}_{2}},{{B}_{3}}\] and \[{{B}_{4}}\] respectively represent the magnetic fields due to the current in the rod at points 1, 2, 3 and 4 lying at different separations from the centre O, as shown in the figure. Which of the following shall hold true?
  A)
   \[{{B}_{1}}>{{B}_{2}}\ne 0\]                      
  done clear
  B)
   \[{{B}_{2}}>{{B}_{3}}\ne 0\]
  done clear
  C)
   \[{{B}_{1}}>{{B}_{2}}={{B}_{3}}=0\]       
  done clear
  D)
   \[{{B}_{3}}>{{B}_{4}}_{3}\ne 0\]
  done clear
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• question_answer27) When an AC source of emf E = eq sin (100 O is connected across a circuit, the phase difference between the emf E and the current I is observed to be \[\pi /4\], as shown in the figure. If the circuit consists possibly only of R -C or R - L in series, which of the following combinations is possible?
  A)
   \[R=1\,k\Omega ,\,\,C=10\,\mu F\]      
  done clear
  B)
   \[R=1\,k\Omega ,\,\,C=1\,\mu F\]
  done clear
  C)
   \[R=1\,k\Omega ,\,\,C=10\,\mu F\]      
  done clear
  D)
   \[R=1\,k\Omega ,\,\,C=1\,H\]
  done clear
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• question_answer28) As shown in the figure, a metal rod makes contact with a partial circuit and completes the circuit. The circuit area is perpendicular to a magnetic field with B = 0.15 T. If the resistance of the total circuit is \[3\Omega \], the force needed to move the rod as indicated with a constant speed of 2 m/s will be equal to
  A)
   \[3.75\times {{10}^{-3}}N\]
  done clear
  B)
   \[2.75\times {{10}^{-3}}N\]
  done clear
  C)
   \[6.57\times {{10}^{-4}}N\]       
  done clear
  D)
   \[4.36\times {{10}^{-4}}N\]
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• question_answer29) As given in the figure, a series circuit connected across a 200 V, 60 Hz line consists of a capacitor of capacitive reactance \[30\,\,\Omega \], a non-inductive resistor of \[44\,\,\Omega \]. and a coil of inductive reactance \[90\,\,\Omega \]. and resistance\[36\,\,\Omega \]. The power dissipate in the coil is  
  A)
   320 W                  
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  B)
   176 W
  done clear
  C)
   144 W                  
  done clear
  D)
   0
  done clear
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• question_answer30) The wave function (in SI unit) for a light wave is given as \[\Psi (x,t)={{10}^{3}}\sin \pi (3\times {{10}^{6}}x-9\times {{10}^{14}}t)\] The frequency of the wave is equal to
  A)
   \[4.54\times {{10}^{14}}Hz\]     
  done clear
  B)
   \[3.5\times {{10}^{14}}Hz\]
  done clear
  C)
   \[3.5\times {{10}^{10}}Hz\]                       
  done clear
  D)
   \[2.5\times {{10}^{10}}Hz\]
  done clear
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• question_answer31) A short linear object of length L lies on the as of a spherical mirror of focal length \[f\] at distance u form the mirror. Its image has a axial length L equal to
  A)
   \[L{{\left[ \frac{f}{u-f} \right]}^{1/2}}\]                
  done clear
  B)
   \[L{{\left[ \frac{u+f}{f} \right]}^{1/2}}\]
  done clear
  C)
   \[L{{\left[ \frac{u-f}{f} \right]}^{2}}\]                    
  done clear
  D)
   \[L{{\left[ \frac{f}{u-f} \right]}^{2}}\]
  done clear
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• question_answer32) An object is placed at a distance of 10 cm from co-axial combination of two lenses A and B contact. The combination forms a real image three times the size of the object. If lens B concave with a focal length of 30 cm. The nature and focal length of lens A is
  A)
   convex, 12 cm                 
  done clear
  B)
   concave, 12 cm
  done clear
  C)
   convex, 6 cm                    
  done clear
  D)
   convex, 18 cm
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• question_answer33) White light is incident on face AB of agle prism. The path of the green component shown in the figure. If the green light is f totally internally reflected at face AC as shown, the light emerging form face AC will contain
  A)
   yellow, orange and red colours
  done clear
  B)
   violet, indigo and blue colours
  done clear
  C)
   all colours
  done clear
  D)
   all colours except green
  done clear
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• question_answer34) A parallel beam of monochromatic light is incident normally on narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam. At the first minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of the slit is
  A)
   zero                                     
  done clear
  B)
   \[\pi /2\]
  done clear
  C)
   \[\pi \]                                
  done clear
  D)
   \[2\pi \]
  done clear
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• question_answer35) The de-Broglie wavelength of an electron moving with a velocity \[1.5\times {{10}^{8}}m/s\]is equal to that of a photon. The ratio of the kinetic energy of the electron to the energy of the photon is
  A)
   \[\frac{1}{4}\]                                  
  done clear
  B)
   \[\frac{1}{2}\]
  done clear
  C)
   2                                            
  done clear
  D)
   4
  done clear
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• question_answer36) The threshold frequency for a certain photosensitive metal is \[{{v}_{0}}\]. When it is illuminated by light of frequency \[v=2{{v}_{0}}\], the maximum velocity of photoelectrons is \[{{v}_{0}}\]. What will be the maximum velocity of the photoelectron when the same metal is illuminated by light of frequency \[v=5{{v}_{0}}\]?
  A)
   \[\sqrt{2}\,{{v}_{0}}\]                  
  done clear
  B)
   \[2\,{{v}_{0}}\]
  done clear
  C)
   \[2\sqrt{2}\,{{v}_{0}}\]                
  done clear
  D)
   \[4\,{{v}_{0}}\]
  done clear
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• question_answer37) A nucleus of mass number 220, initially at rest, emits an \[\alpha \]-particle. If the Q value of the reaction is 5.5 MeV, the energy of the emitted \[\alpha \]-particle will be
  A)
   4.8 MeV             
  done clear
  B)
   5.4 MeV
  done clear
  C)
   5.5 MeV             
  done clear
  D)
   6.8 MeV
  done clear
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• question_answer38) A radioactive substance emits n beta particles in the first 2 seconds and 0.5 n beta particles in the next 2 seconds. The mean life of the sample is
  A)
   4s                                          
  done clear
  B)
   2 s
  done clear
  C)
   \[\frac{2}{(In\,2)}s\] 
  done clear
  D)
   \[2\,(In\,2)\,s\]
  done clear
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• question_answer39) Which of the following equations correctly represents the temperature variation of energy gap between the conduction and valence bands for Si?
  A)
   \[{{E}_{g}}(T)=0.70-2.23\times {{10}^{-4}}T\,eV\]
  done clear
  B)
   \[{{E}_{g}}(T)=0.70+2.23\times {{10}^{-4}}T\,eV\]
  done clear
  C)
   \[{{E}_{g}}(T)=1.10-3.60\times {{10}^{-4}}T\,eV\]
  done clear
  D)
   \[{{E}_{g}}(T)=1.10+3.60\times {{10}^{-4}}T\,eV\]
  done clear
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• question_answer40) Which of the following is not a rectifier circuit?
  A)
  
  done clear
  B)
  
  done clear
  C)
    
  done clear
  D)
  
  done clear
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• question_answer41) The following network of gates is equivalent to
  A)
                  
  done clear
  B)
   
  done clear
  C)
                  
  done clear
  D)
   
  done clear
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• question_answer42) A physical quantity X is given by                 \[X=\frac{2{{k}^{3}}{{l}^{2}}}{m\sqrt{n}}\] The percentage error in the measurements of\[k,\,\,\,l,\,\,m\] and n are 1%, 2%, 3% and 4% respectively. The value of X is uncertain by
  A)
   8%                                        
  done clear
  B)
   10%
  done clear
  C)
   12%                                      
  done clear
  D)
   None of these
  done clear
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• question_answer43) A man runs at a speed of 4.0 m/s to overtake a standing bus. When he is 6.0 m behind the door (at t = 0), the bus moves forward and continues with a constant acceleration of\[1.2\,\,m/{{s}^{2}}\]. The man shall gain the door at time t equal to
  A)
   5.2 s     
  done clear
  B)
   4.3 s
  done clear
  C)
   2.3 s
  done clear
  D)
                   The man shall never gain the door  
  done clear
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• question_answer44) One end of a string of length 1.0 m is tied to a body of mass 0.5 kg. It is whirled in a vertical circle with angular frequency 4 rad/s. The tension in the string, when the body is at the lower most point of its motion, will be equal to (Take \[g=10\,\,m/{{s}^{2}}\])
  A)
   3 N                                       
  done clear
  B)
   5 N
  done clear
  C)
   8 N                                       
  done clear
  D)
   13 N
  done clear
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• question_answer45) Let \[{{r}_{1}}\,(t)=3\,t\,i+4{{t}^{2}}j\] and \[{{r}_{2}}\,(t)=4\,{{t}^{2}}\,i+3r\,\,j\] represent the positions of particles 1 and 2, respectively, as function of time \[t,\,\,{{r}_{1}}(t)\] and \[{{r}_{2}}(t)\] are in metre and t in second. The relative speed of the two particles at the instant t = 1 s, will be
  A)
   1 m/s                                   
  done clear
  B)
   \[3\sqrt{2}\,m/s\]
  done clear
  C)
   \[5\sqrt{2}\,m/s\]         
  done clear
  D)
   \[7\sqrt{2}\,m/s\]
  done clear
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• question_answer46) A particle moves in a circular orbit of radius r fc under a central attractive force \[F=-\frac{k}{r},\,k\] is constant. The time period of its motion shall be proportional to
  A)
   \[{{r}^{1/2}}\]                                  
  done clear
  B)
   r
  done clear
  C)
   \[{{r}^{3/2}}\]                                  
  done clear
  D)
   \[{{r}^{2/3}}\]
  done clear
  View Answer play_arrow

• question_answer47) In the figure given, the system is in equilibrium. What is the maximum value that W can have if the friction force on the 40 N block cannot exceed 12.0 N?
  A)
   3.45 N                                 
  done clear
  B)
   6.92 N
  done clear
  C)
   10.35N                                
  done clear
  D)
   12.32 N
  done clear
  View Answer play_arrow

• question_answer48) Three blocks, of masses \[{{m}_{1}}=2.0,\,\,{{m}_{2}}=4.0\] and \[{{m}_{3}}=6.0\,\,kg\] are connected by strings on a frictionless inclined plane of \[{{60}^{o}}\], as shown J the figure. A force F = 120 N is applied upward along the incline to the uppermost block, causing an upward movement of the blocks, if connecting cords are light. The values of tensions \[{{T}_{1}}\] and  in the cords are
  A)
   \[{{T}_{1}}=20\,N,\,{{T}_{2}}=60\,N\]
  done clear
  B)
   \[{{T}_{1}}=60\,N,\,{{T}_{2}}=60\,N\]
  done clear
  C)
   \[{{T}_{1}}=30\,N,\,{{T}_{2}}=50\,N\]  
  done clear
  D)
   \[{{T}_{1}}=20\,N,\,{{T}_{2}}=100\,N\]
  done clear
  View Answer play_arrow

• question_answer49) A particle in a certain conservative force field has a potential energy given by \[U=20\,\,xy/z\]. The force exerted on it is
  A)
   \[(20\,y/z)\,i+(20x/z)\,j+(20\,xy/{{z}^{2}})\,k\]
  done clear
  B)
   \[-(20\,y/z)\,i-(20x/z)\,j+(20\,xy/{{z}^{2}})\,k\]
  done clear
  C)
   \[-(20\,y/z)\,i+(20x/z)\,j-(20\,xy/{{z}^{2}})\,k\]
  done clear
  D)
   \[(20\,y/z)\,i+(20x/z)\,j-(20\,xy/{{z}^{2}})\,k\]
  done clear
  View Answer play_arrow

• question_answer50) A sphere P of mass m and velocity vi undergoes an oblique and perfectly elastic collision with an identical sphere Q initially at rest. The angle \[\theta \] between the velocities of the spheres after the collision shall be
  A)
   0                                            
  done clear
  B)
   \[{{45}^{o}}\]
  done clear
  C)
   \[{{90}^{o}}\]                                   
  done clear
  D)
   \[{{180}^{o}}\]
  done clear
  View Answer play_arrow

• question_answer51) The \[{{E}^{o}}\] values of the following reduction reactions are given: \[F{{e}^{3+}}(aq)+{{e}^{-}}\xrightarrow{{}}F{{e}^{2+}}(aq),\,\,{{E}^{o}}=0.771\,\,V\] \[F{{e}^{2+}}(aq)+2{{e}^{-}}\xrightarrow{{}}Fe(s),\,\,\,\,\,\,{{E}^{o}}=-0.447\,\,V\] What will be the free energy change for the reaction? \[F{{e}^{3+}}(aq)+3{{e}^{-}}\xrightarrow{{}}Fe(s)\](1F = 96485 C \[mo{{l}^{-1}}\])
  A)
   + 18.51 kJ \[mo{{l}^{-1}}\] 
  done clear
  B)
   +11.87 kJ \[mo{{l}^{-1}}\]
  done clear
  C)
   - 8.10 kJ \[mo{{l}^{-1}}\]             
  done clear
  D)
   - 10.41 kJ \[mo{{l}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer52) Which is the product of the following reaction\[{{C}_{6}}{{H}_{5}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-OC{{H}_{3}}\xrightarrow[(ii)\,\,{{H}^{+}}/{{H}_{2}}O]{(i)\,{{C}_{2}}{{H}_{5}}MgBr\,(2\,mol)}\]
  A)
   \[{{C}_{6}}{{H}_{5}}-C{{H}_{2}}-OH\]
  done clear
  B)
   \[{{C}_{6}}{{H}_{5}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,{{H}_{2}}-{{C}_{2}}{{H}_{5}}\]
  done clear
  C)
   
  done clear
  D)
   \[{{C}_{6}}{{H}_{5}}-\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer53) The acid which do not contain carboxylic acid group is
  A)
   glutaric acid                      
  done clear
  B)
   picric acid
  done clear
  C)
   stearic acid                        
  done clear
  D)
   terephthalic acid
  done clear
  View Answer play_arrow

• question_answer54) The aldol condensation reaction is given by
  A)
   acetophenone
  done clear
  B)
   benzaldehyde
  done clear
  C)
   benzophenone
  done clear
  D)
   trichloroacetaldehyde
  done clear
  View Answer play_arrow

• question_answer55) Which will undergo \[{{\text{S}}_{\text{N}}}\text{2}\]reaction faster?
  A)
                 
  done clear
  B)
   
  done clear
  C)
    
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer56) The main product of the reaction is
  A)
     
  done clear
  B)
    
  done clear
  C)
   
  done clear
  D)
    
  done clear
  View Answer play_arrow

• question_answer57) The gas that is adsorbed to a larger extent on charcoal is
  A)
    \[{{H}_{2}}\]                                    
  done clear
  B)
   \[C{{O}_{2}}\]
  done clear
  C)
   CO                        
  done clear
  D)
   \[N{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer58) Consider two half-cells based on the reaction\[A{{g}^{+}}(aq)+{{e}^{-}}\xrightarrow{{}}Ag\,(s)\] The left half-cell contains \[A{{g}^{+}}\] ions at unit concentration, and the right half-cell initially had the same concentration of \[A{{g}^{+}}\] ions, but just enough \[NaCl\,\,(aq)\] had been added to completely precipitate the \[A{{g}^{+}}\,\,(aq)\] as \[AgCl\]. If the emf of the cell is 0.29 V, the \[{{\log }_{10}}\,\,{{K}_{sp}}\]would have been
  A)
   9.804                   
  done clear
  B)
   - 9.804
  done clear
  C)
   - 4.902                 
  done clear
  D)
   10.004
  done clear
  View Answer play_arrow

• question_answer59) Consider the cell,\[Pt|{{H}_{2}}(g,\,1\,atm)\,{{H}^{+}}(aq,\,\,1M)||F{{e}^{3+}}(aq),\]\[F{{e}^{2+}}(aq)|Pt(s)\] Given that \[{{E}^{o}}_{F{{e}^{3+}}/F{{e}^{2+}}}=0.771\,\,V\], the ratio of concentration of \[F{{e}^{2+}}(aq)\] to \[F{{e}^{3+}}(aq)\] is, when the cell potential is 0.830 V.
  A)
   0.101                                   
  done clear
  B)
   0.924
  done clear
  C)
   0.120                                   
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer60) If the rate constant of a reaction has the value\[k=1.63\times {{10}^{-4}}{{(mol)}^{-\frac{1}{2}}}{{s}^{-1}}\], the order of the reaction is
  A)
   one                                      
  done clear
  B)
   two
  done clear
  C)
   zero                                     
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer61) The, following molecule has a linear shape
  A)
   \[H_{3}^{+}\]                                   
  done clear
  B)
   \[LiH\]
  done clear
  C)
   \[N{{H}_{2}}\]                 
  done clear
  D)
   \[O{{H}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer62) Henrys law constants for aqueous solution of \[CO,\,{{O}_{2}},\,C{{O}_{2}}\] and \[{{C}_{2}}{{H}_{2}}\] gases are respectively at \[{{25}^{o}}C\] as \[58\times {{10}^{3}},\,43\times {{10}^{3}},1.61\times {{10}^{3}}\] and\[1.34\times {{10}^{3}}\]. The solubility of these gases decreases in the order
  A)
   \[CO>{{O}_{2}}>C{{O}_{2}}>{{C}_{2}}{{H}_{2}}\]
  done clear
  B)
   \[{{O}_{2}}>C{{O}_{2}}>CO>{{C}_{2}}{{H}_{2}}\]
  done clear
  C)
   \[{{C}_{2}}{{H}_{2}}>C{{O}_{2}}>{{O}_{2}}>CO\]
  done clear
  D)
   \[{{O}_{2}}>C{{O}_{2}}>{{C}_{2}}{{H}_{2}}>CO\]
  done clear
  View Answer play_arrow

• question_answer63) Ammonia undergoes self-dissociation according to the reaction,\[2N{{H}_{3}}(l)N{{H}_{4}}^{+}(am)+NH_{2}^{-}(am)\]where am, stands for ammoniated. When 1 mole of \[N{{H}_{4}}Cl\] is dissolved in 1 kg of liquid ammonia, the b. p. at 760 tour is observed at \[-{{32}^{o}}C\] (Normal b.p. of \[N{{H}_{3}}(l)\] is\[-{{33.4}^{o}}C\]). What conclusions are reached about the nature of the solution?
  A)
   \[N{{H}_{4}}Cl\] is completely dissociated in \[N{{H}_{3}}\]
  done clear
  B)
   \[N{{H}_{4}}Cl\] is partially dissociated in \[N{{H}_{3}}\]
  done clear
  C)
   \[N{{H}_{4}}Cl\] is not dissociated in \[N{{H}_{3}}\]
  done clear
  D)
   Boiling point is not raised
  done clear
  View Answer play_arrow

• question_answer64) A reacts to form P. A plot of the reciprocal of the concentration of A vs time is a straight line. When the initial concentration of A is\[1.0\times {{10}^{-2}}M\], its half-life is found to be 20 min. When initial concentration of A is \[3.0\times {{10}^{-3}}M\] the half-life will be
  A)
   20 min                 
  done clear
  B)
   40 min
  done clear
  C)
   56 min                 
  done clear
  D)
   67 min
  done clear
  View Answer play_arrow

• question_answer65) The following is the correct increasing order of the ionic radii
  A)
   \[L{{i}^{+}}<M{{g}^{2+}}<{{K}^{+}}<A{{l}^{3+}}\]
  done clear
  B)
   \[A{{l}^{3+}}<L{{i}^{+}}<M{{g}^{2+}}<{{K}^{+}}\]
  done clear
  C)
   \[A{{l}^{3+}}<M{{g}^{2+}}<{{K}^{+}}<L{{i}^{+}}\]
  done clear
  D)
   \[{{K}^{+}}<A{{l}^{3+}}<M{{g}^{2+}}<L{{i}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer66) In the reaction,\[3B{{r}_{2}}+6CO_{3}^{2-}+3{{H}_{2}}O\xrightarrow{{}}5B{{r}^{-}}\]\[+BrO_{3}^{-}+6\,HCO_{3}^{-}\] Choose the correct statement.
  A)
   Bromine is oxidised and carbonate is reduced
  done clear
  B)
   Bromine is reduced and carbonate is oxidized
  done clear
  C)
   Bromine is neither oxidised nor reduced
  done clear
  D)
   Bromine is both oxidised and reduced
  done clear
  View Answer play_arrow

• question_answer67) The normality of 20 volume hydrogen peroxide solution is
  A)
   3.57 N                 
  done clear
  B)
   0.68 N
  done clear
  C)
   5.60 N                 
  done clear
  D)
   5.35 N
  done clear
  View Answer play_arrow

• question_answer68) The work done by the gas liberated when 50 g of iron (molar mass 55.85 g \[mo{{l}^{-1}}\]) reacts with hydrochloric acid in an open beaker at \[{{25}^{o}}C\]
  A)
   zero                                     
  done clear
  B)
   - 2.3 kJ
  done clear
  C)
   2.2kJ                                    
  done clear
  D)
   0.22kJ
  done clear
  View Answer play_arrow

• question_answer69) When zeolite is treated with hard water, the sodium ions are exchanged with
  A)
   \[{{H}^{+}}\] ions
  done clear
  B)
   \[{{H}^{+}}\] and \[C{{a}^{2+}}\] ions
  done clear
  C)
   \[O{{H}^{-}}\] and \[M{{g}^{2+}}\]ions
  done clear
  D)
   \[C{{a}^{2+}}\] and \[M{{g}^{2+}}\] ions
  done clear
  View Answer play_arrow

• question_answer70) The decomposition temperature is the lowest for
  A)
   \[BeC{{O}_{3}}\]                            
  done clear
  B)
   \[MgC{{O}_{3}}\]
  done clear
  C)
   \[SrC{{O}_{3}}\]                              
  done clear
  D)
   \[BaC{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer71) \[Fe{{(OH)}_{3}}\] sol is a
  A)
   macromolecular colloid
  done clear
  B)
   multimolecular colloid
  done clear
  C)
   micelles
  done clear
  D)
   negative colloid
  done clear
  View Answer play_arrow

• question_answer72) The chief component of cement that has property of setting quickly and acquiring considerable strength within a few days is
  A)
   tricalcium silicate, \[3\,CaO\,.\,\,Si{{O}_{2}}\]
  done clear
  B)
   dicalcium silicate, \[2\,CaO\,.\,\,Si{{O}_{2}}\]
  done clear
  C)
   tricalcium aluminate, \[3\,CaO\,.\,\,A{{l}_{2}}{{O}_{3}}\]
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer73) All the four sigma bonds in perchlorate ion are
  A)
   \[s{{p}^{3}}-s{{p}^{3}}\] bond                  
  done clear
  B)
   \[s{{p}^{3}}-p\] bond
  done clear
  C)
   \[s{{p}^{3}}-s{{p}^{2}}\] bond 
  done clear
  D)
   \[s{{p}^{2}}-p\] bond
  done clear
  View Answer play_arrow

• question_answer74) Out of the following electronic arrangements for outer electronic configurations

  (i)

  (ii)

  (iii)

  (iv)

  the most stable arrangement is
  A)
   (i)                          
  done clear
  B)
   (ii)   
  done clear
  C)
   (iii)                        
  done clear
  D)
   (iv)
  done clear
  View Answer play_arrow

• question_answer75) The acid strength of the following oxoacids of chlorine is highest
  A)
   \[HCl{{O}_{4}}\]                              
  done clear
  B)
   \[HCl{{O}_{3}}\]
  done clear
  C)
   \[HCl{{O}_{3}}\]                              
  done clear
  D)
   \[HClO\]
  done clear
  View Answer play_arrow

• question_answer76) A current of 10.0 A is passed through 1.0 L of M HCl solution for 965 s. pH of the solution at the end of the experiment is
  A)
   0                                            
  done clear
  B)
   0.20
  done clear
  C)
   0.8                                        
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer77) Given that the radius of \[N{{a}^{+}}\] ion is \[0.95\,\overset{o}{\mathop{A}}\,\] and that of \[C{{l}^{-}}\] ion is \[1.81\,\overset{o}{\mathop{A}}\,\], hence in the close packed lattice of \[C{{l}^{-}}\] ions, \[N{{a}^{+}}\] ions prefer to occupy
  A)
   tetrahedral site               
  done clear
  B)
   octahedral site
  done clear
  C)
   cubic site          
  done clear
  D)
   trigonal site
  done clear
  View Answer play_arrow

• question_answer78) In \[XeO{{F}_{2}}\] molecule, the hybridisation of Xe orbitals is
  A)
   \[s{{p}^{3}}{{d}^{3}}\]                 
  done clear
  B)
   \[s{{p}^{3}}{{d}^{2}}\]
  done clear
  C)
   \[s{{p}^{3}}d\]                
  done clear
  D)
   \[s{{p}^{3}}\]
  done clear
  View Answer play_arrow

• question_answer79) Equivalent weight of potassium permanganate in alkaline solution is equal to m
  A)
   \[\frac{1}{5}th\] of the molar mass of \[KMn{{O}_{4}}\]
  done clear
  B)
   \[\frac{1}{6}th\] of the molar mass of \[KMn{{O}_{4}}\]
  done clear
  C)
   \[\frac{1}{3}rd\]of the molar mass of \[KMn{{O}_{4}}\]
  done clear
  D)
   \[\frac{1}{10}th\] of the molar mass of \[KMn{{O}_{4}}\]
  done clear
  View Answer play_arrow

• question_answer80) The defect that is more likely to occur in almost all types of ionic crystals is
  A)
   non-stoichiometric defects
  done clear
  B)
   Schottky defect
  done clear
  C)
   Frenkel defect
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer81) Effective atomic number of the central metal ion, Pt, in the complex \[{{[Pt{{(N{{H}_{3}})}_{6}}]}^{4+}}\] is: (The atomic no. of Pt is 78)
  A)
   74                         
  done clear
  B)
   90   
  done clear
  C)
   86    
  done clear
  D)
   84
  done clear
  View Answer play_arrow

• question_answer82) Compounds, \[{{[PtC{{l}_{2}}N{{H}_{3}})}_{4}}]B{{r}_{2}}\] and\[[PtB{{r}_{2}}{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\], shows the following type of isomerism
  A)
   hydrate isomerism
  done clear
  B)
   ionisation isomerism
  done clear
  C)
   linkage isomerism
  done clear
  D)
   coordination position isomerism
  done clear
  View Answer play_arrow

• question_answer83) \[{{[Co{{(CN)}_{6}}]}^{3-}}\], a complex ion of cobalt (III), absorbs radiations in violet region of the visible light. Its aqueous solution, therefore, appears
  A)
   pink                                     
  done clear
  B)
   orange
  done clear
  C)
   blue                                     
  done clear
  D)
   yellow  
  done clear
  View Answer play_arrow

• question_answer84) A metal crystallizes into a lattice containing a sequence of layers of atoms of ABABAB... What percentage by volume of this lattice has empty space?
  A)
   74                         
  done clear
  B)
   26   
  done clear
  C)
   20                         
  done clear
  D)
   16
  done clear
  View Answer play_arrow

• question_answer85) The decreasing order of the first ionisation energy (in kJ \[mo{{l}^{-1}}\]) of He, Mg and Na is\[He>Mg>Na\]. The increasing order of the 2nd ionisation energy (in kJ \[mo{{l}^{-1}}\]) of these elements will be
  A)
   \[Na<Mg<He\]
  done clear
  B)
   \[Mg<Na<He\]
  done clear
  C)
   \[Mg<He<Na\]               
  done clear
  D)
   \[Na<He<Mg\]
  done clear
  View Answer play_arrow

• question_answer86) To coagulate gelatin sol, which one of the following is most effective?
  A)
   \[NaCl\]                             
  done clear
  B)
   \[N{{a}_{3}}P{{O}_{4}}\]
  done clear
  C)
                   \[AlC{{l}_{3}}\]               
  done clear
  D)
                   Alcohols
  done clear
  View Answer play_arrow

• question_answer87) The most important buffer in the blood consists of
  A)
   \[HCl\] and \[C{{l}^{-}}\]             
  done clear
  B)
   \[{{H}_{2}}C{{O}_{3}}\]and \[HCO_{3}^{-}\]
  done clear
  C)
   \[{{H}_{2}}C{{O}_{3}}\] and \[C{{l}^{-}}\]             
  done clear
  D)
   \[HCl\] and \[HCO_{3}^{-}\]
  done clear
  View Answer play_arrow

• question_answer88) Which of the following is not a \[\pi \] bonded complex?
  A)
   Zeises salt
  done clear
  B)
   Ferrocene
  done clear
  C)
   Dibenzene chromium
  done clear
  D)
   Tetramethyllead
  done clear
  View Answer play_arrow

• question_answer89) The correct order of basic ties of PhNH2 , \[P{{h}_{2}}NH\]and Cyclohexyl- \[N{{H}_{2}}(C)\] is
  A)
   A > B > C            
  done clear
  B)
   A > C > B
  done clear
  C)
   C > A > B            
  done clear
  D)
   C > B > A
  done clear
  View Answer play_arrow

• question_answer90) Out of following alkenes,

  (I) cis-2-butene

  (II) Crans-2-butene

  (III) propene

  (IV) ethene.

  Which is the most stable?
  A)
   I                                             
  done clear
  B)
   II
  done clear
  C)
   III                                          
  done clear
  D)
   IV
  done clear
  View Answer play_arrow

• question_answer91) Which of these methods can be used to prepare alcohols?

  I : Hydrolysis of cyanides

  II : Hydration of olefins

  III : Reduction of carbonyl compounds

  A)
   I, II and III          
  done clear
  B)
   I and II
  done clear
  C)
   II and III              
  done clear
  D)
   I and III
  done clear
  View Answer play_arrow

• question_answer92) What is the major product of the following reaction?
  A)
                           
  done clear
  B)
   
  done clear
  C)
                           
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer93) The ozonolysis of an olefin gives only propanone. The olefin is
  A)
   but-1-ene
  done clear
  B)
   but-2-ene
  done clear
  C)
   2, 3-dimethylbut-2-ene
  done clear
  D)
   propene
  done clear
  View Answer play_arrow

• question_answer94) The following reaction\[C{{H}_{3}}-\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  X \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{3}}\xrightarrow[\begin{smallmatrix}  KOH \\  -{{H}_{2}},-KBr \end{smallmatrix}]{Alcoholic}\]\[{{H}_{3}}C-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,=\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\]is an example of
  A)
   \[\alpha \]-elimination
  done clear
  B)
   \[\beta \]-elimination
  done clear
  C)
   Hofmann elimination
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer95)  This reaction is called
  A)
   Etards reaction
  done clear
  B)
   Stephen reaction
  done clear
  C)
   Rosenmunds reaction
  done clear
  D)
   Gattermann-Koch reaction
  done clear
  View Answer play_arrow

• question_answer96) Reduction of acetone in the presence of sodium borohydride gives
  A)
   1-propanol       
  done clear
  B)
   2-propanol
  done clear
  C)
   propene            
  done clear
  D)
   n-propane
  done clear
  View Answer play_arrow

• question_answer97) Which one of the following compounds cannot be used for the preparation of Grignard reagent?
  A)
   \[{{C}_{2}}{{H}_{5}}Br\]
  done clear
  B)
   \[HO-C{{H}_{2}}C{{H}_{2}}Cl\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}Cl\]
  done clear
  D)
   \[C{{H}_{2}}=CH-C{{H}_{2}}Cl\]
  done clear
  View Answer play_arrow

• question_answer98) Which one among the following alcohols will give iodoform on treatment with iodine and sodium hydroxide?
  A)
   \[{{C}_{6}}{{H}_{5}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,H-{{C}_{6}}{{H}_{5}}\]
  done clear
  B)
   \[{{H}_{3}}C-OH\]
  done clear
  C)
   \[{{C}_{6}}{{H}_{5}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}\]
  done clear
  D)
   \[{{H}_{3}}C-C{{H}_{2}}\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,H-{{C}_{6}}{{H}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer99) Reaction of propene with diborane followed alkaline hydrolysis in the presence of hydrogen peroxide gives
  A)
   1-propanol
  done clear
  B)
   2-propanol
  done clear
  C)
   1, 2-dihydroxypropane
  done clear
  D)
   n-propane
  done clear
  View Answer play_arrow

• question_answer100) Acylation of benzene to produce aliphatic aromatic ketones is known as
  A)
   benzoin condensation
  done clear
  B)
   hydroformylation
  done clear
  C)
   Clemmensen reduction
  done clear
  D)
   Friedel-Crafts reaction
  done clear
  View Answer play_arrow

• question_answer101) India has only 2.4% of the worlds land area, its share of the global species diversity is
  A)
   1.8%                                    
  done clear
  B)
   3.1 %
  done clear
  C)
   5.1%                                    
  done clear
  D)
   8.1%
  done clear
  View Answer play_arrow

• question_answer102) Total number of identified biodiversity hot spots in the world are
  A)
   25                                         
  done clear
  B)
   24
  done clear
  C)
   40                         
  done clear
  D)
   34
  done clear
  View Answer play_arrow

• question_answer103) Kanha National Park is located in ............and is famous for................
  A)
   Madhya Pradesh, elephant
  done clear
  B)
   Madhya Pradesh, tiger
  done clear
  C)
   Odhisa, tiger
  done clear
  D)
   Asom, elephant
  done clear
  View Answer play_arrow

• question_answer104) Loop of Henie is found in
  A)
                   lung                                     
  done clear
  B)
                   liver
  done clear
  C)
   neuron               
  done clear
  D)
   nephron
  done clear
  View Answer play_arrow

• question_answer105) One of the following greenhouse gases contributes about 20% of the global warming
  A)
   \[C{{H}_{4}}\]                  
  done clear
  B)
   CFCs
  done clear
  C)
    \[C{{O}_{2}}\]                 
  done clear
  D)
   \[{{N}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer106) Biogenetic law as given by Haeckel states that
  A)
   ontogeny recapitulates phylogeny
  done clear
  B)
   phylogeny recapitulates ontogeny
  done clear
  C)
   ontogeny and phylogeny go together
  done clear
  D)
   there is no relationship between phylogeny and ontogeny
  done clear
  View Answer play_arrow

• question_answer107) An evolutionary pattern characterized by a rapid increase in the number and kinds of closely related species is called
  A)
   convergent evolution
  done clear
  B)
   divergent evolution
  done clear
  C)
   adaptive radiation
  done clear
  D)
   parallel evolution
  done clear
  View Answer play_arrow

• question_answer108) The origin of mammal like reptiles occurred in
  A)
   Triassic period                 
  done clear
  B)
   Permian period
  done clear
  C)
   Jurassic period                
  done clear
  D)
   Tertiary period
  done clear
  View Answer play_arrow

• question_answer109) Stanley Miller had put the Oparin-Haldane theory to test in 1953 by creating in the laboratory, the probable conditions on the primitive Earth. In the experiment, simple amino acids were synthesized from the following mixtures as observed after 18 days
  A)
   \[{{H}_{2}},{{O}_{2}},N\]and \[{{H}_{2}}O\]
  done clear
  B)
   \[C{{H}_{4}},CN,{{H}_{2}}\] and \[{{O}_{2}}\]
  done clear
  C)
   \[{{H}_{2}},N{{H}_{3}},C{{H}_{4}}\] and water vapour
  done clear
  D)
   \[N{{H}_{3}},C{{H}_{4}}\] and \[{{O}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer110) Xenograft means
  A)
   a graft between two genetically identical individuals
  done clear
  B)
   a graft in which a tissue is grafted from one individual to another individual of the same species
  done clear
  C)
   a graft between individuals of different species
  done clear
  D)
   tissue grafted from one area to another of the same individual
  done clear
  View Answer play_arrow

• question_answer111) The restriction enzyme (s) used in recombinant DNA technology making staggered cuts in DNA leaving sticky ends is/are
  A)
   Eco RI                  
  done clear
  B)
   Hind III
  done clear
  C)
   Barn HI               
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer112) If haemoglobin (Hb) of a normal individual and a sickle-cell patient are run in electrophoretic field, they will show
  A)
   same mobilities
  done clear
  B)
   different mobilities
  done clear
  C)
   Hb of patient will not move at all
  done clear
  D)
   Hbs are immobile
  done clear
  View Answer play_arrow

• question_answer113) Depending upon the distance between any two genes which is inversely proportional to the strength of linkage, cross overs will vary from
  A)
   50-100%             
  done clear
  B)
   0-50%
  done clear
  C)
   75-100 %            
  done clear
  D)
   100-150%
  done clear
  View Answer play_arrow

• question_answer114) Inhibition of acetylcholine by DFP (Di-isopropyl-fluorophosphate) is an example of
  A)
   competitive inhibition
  done clear
  B)
   non-competitive inhibition
  done clear
  C)
   non-competitive irreversible inhibition
  done clear
  D)
   allosteric inhibition
  done clear
  View Answer play_arrow

• question_answer115) When both alleles of a pair are fully expressed in a heterozygote, they are called
  A)
   lethals                 
  done clear
  B)
   co-dominants
  done clear
  C)
   semi-dominaiits              
  done clear
  D)
   recessive allele
  done clear
  View Answer play_arrow

• question_answer116) Nitrogen base + Pentose sugar + Phosphate group is
  A)
   nucleoside       
  done clear
  B)
   nucleotide
  done clear
  C)
   nucleic acid                       
  done clear
  D)
   pyrimidine base
  done clear
  View Answer play_arrow

• question_answer117) ............ is a globular protein of \[\sim \]6 kDa consisting of 51 amino acids, arranged in a 2 polypeptide chains held together by disulphide bridge
  A)
   insulin                 
  done clear
  B)
   keratin
  done clear
  C)
   glucagon            
  done clear
  D)
   fibrinogen
  done clear
  View Answer play_arrow

• question_answer118) Which of the following fatty acid is liquid at room temperature?
  A)
   Palmitic acid                     
  done clear
  B)
   Stearic acid
  done clear
  C)
   Oleic acid           
  done clear
  D)
   Linoleic acid
  done clear
  View Answer play_arrow

• question_answer119) The energy content in kcal/g of carbohydrate: Protein: triglycerol respectively is approximately in the ratio of
  A)
   1 : 2 : 2                                
  done clear
  B)
   1 : 2 : 1
  done clear
  C)
   2 : 1 : 1                
  done clear
  D)
   2 : 2 : 1
  done clear
  View Answer play_arrow

• question_answer120) The cell membranes of adjacent cells are fused at this cell junction
  A)
   macula adherens           
  done clear
  B)
   zonula adherens
  done clear
  C)
   zonula occludens           
  done clear
  D)
   nexus
  done clear
  View Answer play_arrow

• question_answer121) One of the following salts predominates in bone matrix
  A)
   sodium chloride
  done clear
  B)
   magnesium phosphate
  done clear
  C)
   calcium phosphate
  done clear
  D)
   sodium carbonate
  done clear
  View Answer play_arrow

• question_answer122) Which one of the following species of bee is used for the commercial production of honey?
  A)
   Apis dorsata                     
  done clear
  B)
   Apis indica
  done clear
  C)
   Apis florae       
  done clear
  D)
   Apis mellifera
  done clear
  View Answer play_arrow

• question_answer123) Which one of the following is a breed of cattle?
  A)
   Ayreshire          
  done clear
  B)
   Ghagus
  done clear
  C)
   Kadakanath                      
  done clear
  D)
   Scampi
  done clear
  View Answer play_arrow

• question_answer124) The falciform ligament in man connects
  A)
   liver with diaphragm
  done clear
  B)
   lungs with diaphragm
  done clear
  C)
   stomach with diaphragm
  done clear
  D)
   liver with stomach
  done clear
  View Answer play_arrow

• question_answer125) Dark adaptation in human eye involves
  A)
   Conversion of 11 ci5-retinene to trans- retinene
  done clear
  B)
   Conversion of trans-retinene into 11-cis- retinene
  done clear
  C)
   Decomposition of rhodopsin into retinene
  done clear
  D)
   Decomposition of rhodopsin to scotopsin
  done clear
  View Answer play_arrow

• question_answer126) The optic lobes in humans are represented by the corpora
  A)
   bigemina           
  done clear
  B)
   arenacea
  done clear
  C)
   allata                                   
  done clear
  D)
   quadrigemina
  done clear
  View Answer play_arrow

• question_answer127) The animals that rely on the heat from environment than metabolism to raise their body temperature are, in strict sense, called
  A)
   ectothermic                     
  done clear
  B)
   poikilothermic
  done clear
  C)
   homeothermic                
  done clear
  D)
   endothermic
  done clear
  View Answer play_arrow

• question_answer128) Lub sound produced during heart beat is caused by
  A)
   ventricular diastole       
  done clear
  B)
   ventricular systole
  done clear
  C)
   atrial diastole                     
  done clear
  D)
   atrial systole
  done clear
  View Answer play_arrow

• question_answer129) which is correct for Turners syndrome?
  A)
   It is a mono so my
  done clear
  B)
   It causes sterility in females
  done clear
  C)
   Absence of Barr body
  done clear
  D)
   All of the above
  done clear
  View Answer play_arrow

• question_answer130) Argentaffin cells in human beings are found in
  A)
   small intestine                 
  done clear
  B)
   stomach
  done clear
  C)
   large intestine                 
  done clear
  D)
   liver
  done clear
  View Answer play_arrow

• question_answer131) In human beings, the three pair of salivary glands and numerous buccal glands produce about
  A)
   1.0 \[d{{m}^{3}}\] of saliva per day
  done clear
  B)
   1.5 \[d{{m}^{3}}\] of saliva per day
  done clear
  C)
   2.0 \[d{{m}^{3}}\] of saliva per day
  done clear
  D)
   2.5 \[d{{m}^{3}}\] of saliva per day
  done clear
  View Answer play_arrow

• question_answer132) This gastrointestinal hormone stimulates insulin secretion
  A)
   gastrin                
  done clear
  B)
   CCK
  done clear
  C)
   secretin              
  done clear
  D)
   GIP
  done clear
  View Answer play_arrow

• question_answer133) This is the common passage for bile and pancreatic juices
  A)
   ampulla of Vater            
  done clear
  B)
   ductus Cholidochus
  done clear
  C)
   duct of Wirsung
  done clear
  D)
   duct of Santorini
  done clear
  View Answer play_arrow

• question_answer134) In the gastro-intestinal tract die Meissners plexus and the Auerbachs plexus occur respectively in the
  A)
   lamina propria and muscularis mucosa
  done clear
  B)
   submucosa and muscularis externa
  done clear
  C)
   submucosa and mucosa
  done clear
  D)
   mucosa and muscularis externa
  done clear
  View Answer play_arrow

• question_answer135) The important muscle proteins that help in movement are
  A)
   actin and myosin            
  done clear
  B)
   tropomyosin
  done clear
  C)
   troponin            
  done clear
  D)
   All of these
  done clear
  View Answer play_arrow

• question_answer136) It is a disease which mainly affects mucous membrane of urinogenital tract. In males, burning feeling on passing urine, after a yellow discharge occurs, that is accompanied by fever, headache and feeling of illness
  A)
   syphilis               
  done clear
  B)
   gonorrhea
  done clear
  C)
                   AIDS                                    
  done clear
  D)
                   None of these
  done clear
  View Answer play_arrow

• question_answer137) Athletes foot is caused by
  A)
   Tinea pedis                       
  done clear
  B)
   Tinea capitis
  done clear
  C)
   Candida albicans             
  done clear
  D)
   Rickettsia
  done clear
  View Answer play_arrow

• question_answer138) Hepatitis-B virus is a
  A)
   hepadnavirus                  
  done clear
  B)
   variolavirus
  done clear
  C)
   retrovirus         
  done clear
  D)
   picomavirus
  done clear
  View Answer play_arrow

• question_answer139) Immunoglobulins serving as mediators in allergic response are
  A)
   IgE                        
  done clear
  B)
   IgD  
  done clear
  C)
   IgM                      
  done clear
  D)
   IgA
  done clear
  View Answer play_arrow

• question_answer140) One of the group include all sexually transmitted diseases
  A)
   AIDS, syphilis, cholera
  done clear
  B)
   HIV Malaria, trichomoniasis
  done clear
  C)
   Gonorrhoea, hepatitis-B, Chlamydiasis
  done clear
  D)
   Hepatitis-B, Haemophilia, AIDS
  done clear
  View Answer play_arrow

• question_answer141) The carrying capacity of environment for a given population can be represented by the following equation
  A)
   \[dN=rN-\frac{N}{K}\] 
  done clear
  B)
   \[\frac{dN}{dt}=rN-\frac{N}{K}\]
  done clear
  C)
   \[\frac{dN}{dt}=rN-\frac{1}{K}\]             
  done clear
  D)
   \[\frac{dN}{dt}=rN\,\,\left( 1-\frac{N}{K} \right)\]
  done clear
  View Answer play_arrow

• question_answer142) It is normally a rare cancer but became a marker for AIDS/HIV patients
  A)
   squamous cell carcinoma
  done clear
  B)
   retinoblastoma
  done clear
  C)
   Kaposfs sarcoma
  done clear
  D)
   lukaemia
  done clear
  View Answer play_arrow

• question_answer143) In fish, Catla catla the specific name is identical with the generic name. Such condition is referred to as
  A)
   autonymy         
  done clear
  B)
   tautonymy
  done clear
  C)
   synonymy         
  done clear
  D)
   homonymy
  done clear
  View Answer play_arrow

• question_answer144) Jaws of shark contain
  A)
   thecodont teeth            
  done clear
  B)
   acrodont teeth
  done clear
  C)
   pleurodont teeth           
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer145) The nerve chord in earthworm originates from
  A)
   supra-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 3rd to the last
  done clear
  B)
   supra-pharyngeal ganglia and has fused pair of ganglia in each segment from the 4 to the last
  done clear
  C)
   sub-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 5th to the last
  done clear
  D)
   sub-pharyngeal ganglia and has a fused pair of ganglia in each segment from the 6th to the last
  done clear
  View Answer play_arrow

• question_answer146) In the mouth parts of cockroach, the goba and lacinia form parts of the
  A)
   mandibles        
  done clear
  B)
   maxilla
  done clear
  C)
   labium                
  done clear
  D)
   labrum
  done clear
  View Answer play_arrow

• question_answer147) An aquatic living fossil with ancient origin and many primitive characters, which respires through book gills, is
  A)
   Limulus               
  done clear
  B)
   Cancer
  done clear
  C)
   Lucifer                
  done clear
  D)
   Daphnia
  done clear
  View Answer play_arrow

• question_answer148) Which is the only phylum in the animal kingdom without any nerve cell?
  A)
   Porifera              
  done clear
  B)
   Coelenterata
  done clear
  C)
   Annelida            
  done clear
  D)
   Nematoda
  done clear
  View Answer play_arrow

• question_answer149) Which of the following animal belongs to the phylum-Mollusca?
  A)
   Devil fish            
  done clear
  B)
   Dog fish
  done clear
  C)
   Silver fish           
  done clear
  D)
   Jelly fish
  done clear
  View Answer play_arrow

• question_answer150) If a water body is contaminated with a toxicant, its bio magnification will be more marked in
  A)
   water                                  
  done clear
  B)
   planktons
  done clear
  C)
   small fishes                       
  done clear
  D)
   birds
  done clear
  View Answer play_arrow

• question_answer151) Radial conduction of water takes place by
  A)
   vessels
  done clear
  B)
   vessels and tracheids
  done clear
  C)
   phloem
  done clear
  D)
   ray parenchymatous cells
  done clear
  View Answer play_arrow

• question_answer152) Plant cells normally lack
  A)
   ribosomes        
  done clear
  B)
   Golgi bodies
  done clear
  C)
   centrioles          
  done clear
  D)
   cell membrane
  done clear
  View Answer play_arrow

• question_answer153) Detailed structure of the membrane was studied after the advent of electron microscope during
  A)
   1930s                                   
  done clear
  B)
   1950s
  done clear
  C)
   1970s                                   
  done clear
  D)
   1990s
  done clear
  View Answer play_arrow

• question_answer154) The usual axonemal arrangement of microtubules is
  A)
   6 pairs of doublets radially arranged at periphery with a pair of centrally located microtubules
  done clear
  B)
   6 pairs of doublets radially arranged at periphery with a single centrally located microtubule
  done clear
  C)
   9 pairs of doublets radially arranged at periphery with a pair of centrally located microtubules
  done clear
  D)
   9 pairs of doublets radially arranged at periphery with a single centrally located microtubule
  done clear
  View Answer play_arrow

• question_answer155) When the chromosome has a centromere nearer to one end of the chromosome resulting into one shorter and one longer arm, the chromosome is termed as
  A)
   metacentric                      
  done clear
  B)
   sub-metacentric
  done clear
  C)
   acrocentric       
  done clear
  D)
   telocentric
  done clear
  View Answer play_arrow

• question_answer156) Yeast cell can progress through the cell cycle in about
  A)
   30 min                 
  done clear
  B)
   60 min
  done clear
  C)
   90 min 
  done clear
  D)
   120 min
  done clear
  View Answer play_arrow

• question_answer157) The chromosome becomes gradually visible with compaction of chromosomes during the meiotic stage
  A)
   diplotene         
  done clear
  B)
   leptotene
  done clear
  C)
   zygotene           
  done clear
  D)
   pachytene
  done clear
  View Answer play_arrow

• question_answer158) Melvin Calvin was professor of
  A)
   botany                
  done clear
  B)
   plant physiology
  done clear
  C)
   chemistry          
  done clear
  D)
   biochemistry
  done clear
  View Answer play_arrow

• question_answer159) Micronutrients are
  A)
   Mn, Ni and Zn                  
  done clear
  B)
   0, Cu and B
  done clear
  C)
   Mg, Mn and Mo             
  done clear
  D)
   Ca, S and Fe
  done clear
  View Answer play_arrow

• question_answer160) Phloem sap is mainly made up of
  A)
   Water and sucrose
  done clear
  B)
   Water and minerals
  done clear
  C)
   Oligosaccharides and hormones
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer161) Forces generated by transpiration can create pressure sufficient to lift water even upto height of
  A)
   130 feet             
  done clear
  B)
   130 metre
  done clear
  C)
   230 feet             
  done clear
  D)
   230 metre
  done clear
  View Answer play_arrow

• question_answer162) The essential element needed for water splitting in photosynthesis leading to \[{{O}_{2}}\] evolution is
  A)
   Mo                                       
  done clear
  B)
   Mn  
  done clear
  C)
   Mg                                       
  done clear
  D)
   K
  done clear
  View Answer play_arrow

• question_answer163) In the overall process of photosynthesis, the number of \[C{{O}_{2}}\], water, sugar and \[{{O}_{2}}\] molecules utilized and produced is
  A)
   12                                         
  done clear
  B)
   13   
  done clear
  C)
   19                                         
  done clear
  D)
   31
  done clear
  View Answer play_arrow

• question_answer164) During Calvin cycle the total number of \[C{{O}_{2}}\], ATP and NADPH molecules utilized and glucose, ADP and NADP generated is
  A)
   31                                         
  done clear
  B)
   36
  done clear
  C)
   61                                         
  done clear
  D)
   67
  done clear
  View Answer play_arrow

• question_answer165) When fats are respiratory substrate, the value of R.Q. would be about
  A)
   0.7                                        
  done clear
  B)
   1.0
  done clear
  C)
   more than 1.0                  
  done clear
  D)
   None of these
  done clear
  View Answer play_arrow

• question_answer166) To speed up the making process in brewing industry, the growth hormone used is
  A)
   auxin                                   
  done clear
  B)
   gibberellic acid
  done clear
  C)
   kinetin                
  done clear
  D)
   ethylene
  done clear
  View Answer play_arrow

• question_answer167) Glycolysis term has originated form Greek words
  A)
   glycose and lysis             
  done clear
  B)
   glycos and lysis
  done clear
  C)
   glyco and lysis                  
  done clear
  D)
   glucose and lysis
  done clear
  View Answer play_arrow

• question_answer168) Banana is vegetatively propagated by
  A)
   tuber                                   
  done clear
  B)
   rhizome
  done clear
  C)
   bulb                                     
  done clear
  D)
   sucker
  done clear
  View Answer play_arrow

• question_answer169) The innermost wall layer of microsporangium nourishing the developing pollen grains is known as
  A)
   endodermis                     
  done clear
  B)
   endothecium
  done clear
  C)
   tapetum            
  done clear
  D)
   sporogenous tissue
  done clear
  View Answer play_arrow

• question_answer170) The type of pollination when different pollen grains are brought to stigma is
  A)
   geitonogamy                   
  done clear
  B)
   cleistogamy
  done clear
  C)
   xenogamy         
  done clear
  D)
   chasmogamy
  done clear
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• question_answer171) Among the seven pairs of contrasting traits in pea plant, studied by Mendel, the number of traits related to flower, pod and seed respectively was
  A)
   2, 2, 2                                  
  done clear
  B)
   2, 2, 1
  done clear
  C)
   1, 2, 2                                  
  done clear
  D)
   1, 1, 2
  done clear
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• question_answer172) Crick, one the discoverer of DNA double helical structure, was the man of
  A)
   Physics          
  done clear
  B)
   Chemistry
  done clear
  C)
   Zoology          
  done clear
  D)
   Botany
  done clear
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• question_answer173) Some of the dominant traits studied by Mendel were
  A)
   round seed shape, constricted pod shape and axial flower position
  done clear
  B)
   green pod colour, inflated pod shape and axial flower position
  done clear
  C)
   yellow seed-colour-violet flower colour and yellow pod colour
  done clear
  D)
   axial flower position, green pod colour and green seed colour
  done clear
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• question_answer174) In a dihybrid cross where two parents differ in two pairs of contrasting traits like seed colour yellow (YY) and seed colour green (yy) with seed shape round (RR) and seed shape wrinkled (rr), the number of green coloured seeds (yy) among sixteen products of \[{{F}_{2}}\] generation will be
  A)
   2                                                            
  done clear
  B)
   4    
  done clear
  C)
   6                                                            
  done clear
  D)
   8
  done clear
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• question_answer175) The number of codons that code different amino acids is
  A)
   16                                         
  done clear
  B)
   31   
  done clear
  C)
   61                                         
  done clear
  D)
   64
  done clear
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• question_answer176) Some amino acids are coded by more than one codon hence, the code is
  A)
   unambiguous                  
  done clear
  B)
   degenerate
  done clear
  C)
   universal            
  done clear
  D)
   initiator
  done clear
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• question_answer177) The colour based contrasting traits in seven contrasting pairs studied by Mendel in pea were
  A)
   1                                            
  done clear
  B)
   2
  done clear
  C)
   3                                            
  done clear
  D)
   4
  done clear
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• question_answer178) Out of 64 codons, the number of codons with GGG, is
  A)
   1                                                            
  done clear
  B)
   2    
  done clear
  C)
   4                                                            
  done clear
  D)
   6
  done clear
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• question_answer179) Black rot of crucifers is caused by a
  A)
   fungus                
  done clear
  B)
   bacterium
  done clear
  C)
   virus                                    
  done clear
  D)
   None of these
  done clear
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• question_answer180) Pusa Komal variety of cow pea is resistant to disease
  A)
   hill bunt              
  done clear
  B)
   white rust
  done clear
  C)
   leaf curl              
  done clear
  D)
   bacterial blight
  done clear
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• question_answer181) Lactic acid bacteria (LAB) grow in milk and convert it to curd and also improved its nutritional quality by increasing
  A)
   Vitamin-A          
  done clear
  B)
   Vitamin-\[{{B}_{12}}\]
  done clear
  C)
   Vitamin-\[{{B}_{6}}\]                    
  done clear
  D)
   Vitamin-C and A
  done clear
  View Answer play_arrow

• question_answer182) Cohen and Boyer isolated an antibiotic resistance gene, by cutting out a piece of DNA form a plasmid which was responsible for conferring antibiotic resistance, in the year
  A)
   1962                                     
  done clear
  B)
   1965
  done clear
  C)
   1972                                     
  done clear
  D)
   1982
  done clear
  View Answer play_arrow

• question_answer183) Restriction enzyme Eco RI cuts the DNA between bases G and A only when the sequence in DNA is
  A)
   GATATC             
  done clear
  B)
   GAATTC
  done clear
  C)
   GATTCC                              
  done clear
  D)
   GAACTT
  done clear
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• question_answer184) Amplification of gene of interest by using DNA polymerase may go upto
  A)
   0.1 million times             
  done clear
  B)
   1.0 million times
  done clear
  C)
   1.0 billion times               
  done clear
  D)
   1.0 trillion times
  done clear
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• question_answer185) The important steps in the process of decomposition are
  A)
   fragmentation and mineralization
  done clear
  B)
   leaching and catabolism
  done clear
  C)
   humification and mineralization
  done clear
  D)
   All the above
  done clear
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• question_answer186) In an ecosystem, at a particular time, standing crop includes
  A)
   total living material
  done clear
  B)
   total detritus
  done clear
  C)
  Both (a) and (b)
  done clear
  D)
   total nutrients present in the crop
  done clear
  View Answer play_arrow

• question_answer187) In a pyramid of biomass, if the total dry weight \[(kg{{m}^{-2}})\] of primary producers is about 809 it will decrease at tertiary consumer level upto
  A)
   37 \[kg{{m}^{-2}}\]                        
  done clear
  B)
   11 \[kg{{m}^{-2}}\]
  done clear
  C)
   5 \[kg{{m}^{-2}}\]         
  done clear
  D)
   1.5 \[kg{{m}^{-2}}\]
  done clear
  View Answer play_arrow

• question_answer188) Environment Protection Act, to protect and improve the quality of our environment (air, water and soil) was passed in the year
  A)
   1971                                     
  done clear
  B)
   1974
  done clear
  C)
   1981                                     
  done clear
  D)
   1986
  done clear
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• question_answer189) In domestic sewage, impurities in the form of suspended solids, colloidal materials and dissolved materials, are about
  A)
   0.1 %                                   
  done clear
  B)
   2.1 %
  done clear
  C)
   5.0 %                                   
  done clear
  D)
   10.0-%
  done clear
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• question_answer190) The range of bio magnification of DDT.in an aquatic food chain, if starting from 0.003 ppm   10 level in water, may go at fish eating bird level upto
  A)
   0.5 ppm              
  done clear
  B)
   5.0 ppm
  done clear
  C)
   15.0 ppm           
  done clear
  D)
   25.0 ppm
  done clear
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• question_answer191) Some organisms are tolerant to a narrow range of salinity and are termed as
  A)
   euryhaline        
  done clear
  B)
   stenohaline
  done clear
  C)
  (a) neither (b) nor          
  done clear
  D)
    saline
  done clear
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• question_answer192) The biologist who has been called as the Darwin of the 20the  century, was
  A)
   Linnaeus            
  done clear
  B)
   Ernst Mayr
  done clear
  C)
   Diener                
  done clear
  D)
   Whittaker
  done clear
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• question_answer193) The hierarchial arrangement of taxonic categories in descending order is
  A)
   Kingdom, phylum, class, order, family, genus, species
  done clear
  B)
   Kingdom, division, phylum, order, family, genus, species
  done clear
  C)
   Kingdom, class, phylum, order, family, genus
  done clear
  D)
   Division, kingdom, class, phylum, order, family, genus, species
  done clear
  View Answer play_arrow

• question_answer194) The shape of the coca bacteria is
  A)
   rod                                       
  done clear
  B)
   spherical
  done clear
  C)
   comma               
  done clear
  D)
   spiral
  done clear
  View Answer play_arrow

• question_answer195) The beautiful diatoms and desmids are placed under
  A)
   chrysophytes                   
  done clear
  B)
   dianoflagellates
  done clear
  C)
   euglenoids       
  done clear
  D)
   slime moulds
  done clear
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• question_answer196) The major pigments in Rhodophyceae are
  A)
   chlorophyll-a and b
  done clear
  B)
   chlorophyll-o, c and fucoxanthin
  done clear
  C)
   chlorophyll-o, d and phycoerythrin
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer197) When margin of thalamus grows upward enclosing ovary completely and getting fused with it and the other parts of flower arise above the ovary, the flower is said to be
  A)
   hypogynous                     
  done clear
  B)
   perigynous
  done clear
  C)
   epigynous        
  done clear
  D)
   inferior
  done clear
  View Answer play_arrow

• question_answer198) When placenta forms a ridge along the ventral suture of the ovary and the ovules are borne on this ridge forming two rows, the placentation is termed as
  A)
   axile                                     
  done clear
  B)
   parietal
  done clear
  C)
   marginal                             
  done clear
  D)
   basal
  done clear
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• question_answer199) The mesocarp in coconut is
  A)
   flashy                                  
  done clear
  B)
   stony
  done clear
  C)
   fibrous                                
  done clear
  D)
   milky
  done clear
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• question_answer200) K. Esau dominated the field of plant biology up to the age of 99 years. She contributed mainly in the field of
  A)
   Morphology of flowering plants
  done clear
  B)
   Classification of flowering plants
  done clear
  C)
   A natomy of seed plants
  done clear
  D)
   physiology of seed plants
  done clear
  View Answer play_arrow